US11025393B2ActiveUtilityA1
Wireless communication method, wireless communications apparatus, and wireless communications system
Est. expiryJun 30, 2037(~11 yrs left)· nominal 20-yr term from priority
H04L 5/0051H04J 13/14H04J 13/0062H04L 1/0023H04L 27/0008H04W 72/1268H04L 1/00H04L 27/233H04L 1/0003H04L 1/0027
68
PatentIndex Score
1
Cited by
31
References
20
Claims
Abstract
This application discloses a wireless communication method, a wireless communications apparatus, and a wireless communications system. An example wireless communication method includes: receiving, by a terminal, indication information of uplink data transmission from a base station; determining, by the terminal, a base sequence configuration of a reference signal sequence corresponding to the modulation scheme of the uplink data transmission, and generating a dedicated demodulation reference signal based on the determined base sequence configuration of the reference signal sequence, where the modulation scheme of the uplink data transmission is one of a plurality of modulation schemes supported by the terminal, the plurality of modulation schemes include at least π/2 binary phase shift keying (BPSK), and a base sequence configuration of a reference signal sequence corresponding to the π/2 BPSK is different from a base sequence configuration of a reference signal sequence corresponding to another modulation scheme in the plurality of modulation schemes.
Claims
exact text as granted — not AI-modifiedWhat is claimed is:
1. A wireless communication method, comprising:
receiving indication information of uplink data transmission, wherein the indication information is used to indicate a modulation scheme of the uplink data transmission;
determining a base sequence configuration of a reference signal sequence corresponding to the modulation scheme of the uplink data transmission; and
generating a dedicated demodulation reference signal based on the determined base sequence configuration of the reference signal sequence, wherein
the modulation scheme of the uplink data transmission is one of a plurality of modulation schemes supported by a terminal, the plurality of modulation schemes comprise at least π/2 binary phase shift keying (BPSK), and a base sequence configuration of a reference signal sequence corresponding to the π/2 BPSK is different from a base sequence configuration of a reference signal sequence corresponding to another modulation scheme in the plurality of modulation schemes.
2. The method according to claim 1 , wherein
a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK is less than a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the another modulation scheme.
3. The method according to claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 6, the length value of the Zadoff-Chu sequence is 1511, and the root of the Zadoff-Chu sequence has one or more of the following values:
597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 900, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, or 914.
4. The method according to claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 12, the length value of the Zadoff-Chu sequence is 1277, and the root of the Zadoff-Chu sequence has one or more of the following values:
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1172, or 1173.
5. The method according to claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 18, the length value of the Zadoff-Chu sequence is 1171, and the root of the Zadoff-Chu sequence has one or more of the following values:
59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 1098, 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, 1110, 1111, or 1112.
6. The method according to claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 24, the length value of the Zadoff-Chu sequence is 1213, and the root of the Zadoff-Chu sequence has one or more of the following values:
45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 579, 580, 581, 632, 633, 634, 1157, 1158, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, or 1168.
7. The method according to claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a phase parameter value of a QPSK sequence, the reference signal sequence is generated based on the QPSK sequence, and an element value of the QPSK meets the following equation:
X ( n )= e jφ(n)π/4 ,
wherein X(n) is an n th element of the QPSK sequence, j is an imaginary unit, φ(n) is a phase parameter of the QPSK sequence, and when a length of the reference signal sequence generated based on the QPSK sequence is 6, a value of φ(n) meets a row in the following table:
φ(0), . . . , φ(5)
1
1
3
−3
3
1
1
1
−3
−1
−3
1
1
−1
1
−3
−3
1
1
3
3
1
−3
1
1
3
−3
3
1
1
1
−3
1
3
3
1
1
−3
−1
−3
1
1
1
−3
−3
1
−1
1
−1
1
−1
3
3
−1
−1
−1
3
1
3
−1
−1
−1
−3
3
−3
−1
−1
3
−1
−3
−1
−1
−1
3
−1
−3
−3
−1
−1
3
3
−1
1
−1
−1
−3
3
−3
−1
−1
−1
−3
−3
−1
3
−1
3
1
1
3
−3
3
3
1
3
−1
−1
3
3
1
−3
1
3
3
3
−1
1
−1
3
3
3
−1
−1
3
1
3
3
−1
−3
−3
−1
3
3
3
1
−3
1
3
3
3
−1
1
−1
3
3
−3
−1
−1
−3
3
3
−3
3
1
1
3
−3
1
1
−3
−1
−3
−3
1
−1
1
−3
−3
−3
1
3
3
1
−3
−3
−1
−1
−3
3
−3.
8. The method according claim 1 , wherein
the base sequence configuration of the reference signal sequence corresponding to the another modulation scheme comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence, wherein
a length of the Zadoff-Chu sequence is 21157, and the root of the Zadoff-Chu sequence has one or more of the following values:
1149, 1203, 1215, 1345, 1827, 1873, 1962, 2040, 2276, 2927, 2931, 3196, 3201, 3223, 3406, 3787, 5596, 6247, 6276, 6426, 7736, 7749, 7768, 8693, 8767, 8779, 8970, 9216, 9983, 9996, 11161, 11174, 11941, 12187, 12378, 12390, 12464, 13389, 13408, 13421, 14731, 14881, 14910, 15561, 17370, 17751, 17934, 17956, 17961, 18226, 18230, 18881, 19117, 19195, 19284, 19330, 19812, 19942, 19954, or 20008.
9. The method according to claim 3 , wherein
an element value of the Zadoff-Chu sequence meets the following equation:
X
q
(
m
)
=
e
-
j
π
·
q
·
m
·
(
m
+
1
)
N
zc
,
wherein m is an element sequence number of the Zadoff-Chu sequence, 0≤m≤N zc −1, X q (m) is an m th element of the Zadoff-Chu sequence, is a root of the Zadoff-Chu sequence, N zc is the length of the Zadoff-Chu sequence, and j is an imaginary unit.
10. A wireless communication method, comprising:
sending indication information of uplink data transmission, wherein the indication information is used to indicate a modulation scheme of the uplink data transmission;
receiving a dedicated demodulation reference signal associated with the uplink data transmission; and
determining a base sequence configuration of a reference signal sequence corresponding to the modulation scheme of the uplink data transmission, to estimate a channel characteristic for the uplink data transmission, wherein
the modulation scheme of the uplink data transmission is one of a plurality of modulation schemes supported by a terminal, the plurality of modulation schemes comprise at least π/2 binary phase shift keying (BPSK), and a base sequence configuration of a reference signal sequence corresponding to the π/2 BPSK is different from a base sequence configuration of a reference signal sequence corresponding to another modulation scheme in the plurality of modulation schemes.
11. The method according to claim 10 , wherein
a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK is less than a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the another modulation scheme.
12. The method according to claim 10 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 6, the length value of the Zadoff-Chu sequence is 1511, and the root of the Zadoff-Chu sequence has one or more of the following values:
597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 900, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, or 914.
13. The method according to claim 10 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 12, the length value of the Zadoff-Chu sequence is 1277, and the root of the Zadoff-Chu sequence has one or more of the following values:
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1172, or 1173.
14. The method according to claim 10 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 18, the length value of the Zadoff-Chu sequence is 1171, and the root of the Zadoff-Chu sequence has one or more of the following values:
59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 1098, 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, 1110, 1111, or 1112.
15. The method according to claim 10 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 24, the length value of the Zadoff-Chu sequence is 1213, and the root of the Zadoff-Chu sequence has one or more of the following values:
45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 579, 580, 581, 632, 633, 634, 1157, 1158, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, or 1168.
16. A wireless communications apparatus, comprising:
a receiver, configured to receive indication information of uplink data transmission, wherein the indication information is used to indicate a modulation scheme of the uplink data transmission;
a non-transitory memory storage comprising instructions; and
one or more hardware processors in communication with the non-transitory memory storage, wherein the one or more hardware processors execute the instructions to:
determine a base sequence configuration of a reference signal sequence corresponding to the modulation scheme of the uplink data transmission; and
generate a dedicated demodulation reference signal based on the determined base sequence configuration of the reference signal sequence, wherein
the modulation scheme of the uplink data transmission is one of a plurality of modulation schemes supported by a terminal, the plurality of modulation schemes comprise at least π/2 binary phase shift keying (BPSK), and a base sequence configuration of a reference signal sequence corresponding to the π/2 BPSK is different from a base sequence configuration of a reference signal sequence corresponding to another modulation scheme in the plurality of modulation schemes.
17. The wireless communications apparatus according to claim 16 , wherein
a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK is less than a cubic metric value of a dedicated demodulation reference signal generated based on the base sequence configuration of the reference signal sequence corresponding to the another modulation scheme.
18. The wireless communications apparatus according to claim 16 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 6, the length value of the Zadoff-Chu sequence is 1511, and the root of the Zadoff-Chu sequence has one or more of the following values:
597, 598, 599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 900, 901, 902, 903, 904, 905, 906, 907, 908, 909, 910, 911, 912, 913, or 914.
19. The wireless communications apparatus according to claim 16 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 12, the length value of the Zadoff-Chu sequence is 1277, and the root of the Zadoff-Chu sequence has one or more of the following values:
104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 1159, 1160, 1161, 1162, 1163, 1164, 1165, 1166, 1167, 1168, 1169, 1170, 1171, 1172, or 1173.
20. The wireless communications apparatus according to claim 16 , wherein
the base sequence configuration of the reference signal sequence corresponding to the π/2 BPSK comprises a length value and a root value of a Zadoff-Chu sequence, and the reference signal sequence is generated based on the Zadoff-Chu sequence; and
when a length of the reference signal sequence generated based on the Zadoff-Chu sequence is 18, the length value of the Zadoff-Chu sequence is 1171, and the root of the Zadoff-Chu sequence has one or more of the following values:
59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 1098, 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109, 1110, 1111, or 1112.Join the waitlist — get patent alerts
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